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CIRCULAR SAWING MAGHINE.

,182. Patented Feb. 8,1887;

INVENTOR WITNESSES:

' ATTORNES.

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UNITED STATES PATENT CFFrcE.

HENRY M. DARLING, OF SENECA FALLS, NEWV YORK, ASSIGNOR TO ADELBERT S. DAVIS, OF SAME PLACE.

CIRCULAR SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 357,182, dated February 8, 1887.

Application filed October 4, 1886. Serial No. 215,2!8. (No model.)

To all whom it may concern.-

Be it known that I, HENRYM. DARLING, ofSeneca Falls, in the county of Seneca, in the State of New York, have invented new and useful Improvements in Foot and Hand Power Circular Sawing Machines, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists, first, in a novel combination of devices for transmitting motion to the saw either by hand or foot power; and, secondly, in a novel construction and combination of the sawarbor provided with screw-threads, and a pinion having the interior of the eye of the hub screw-threaded correspondingly and screwed onto the arbor, so as to make said pinion serve as a jam-nut, by which the saw is secured on the arbor, all as hereinafter more fully described, and specifically set forth in the claims.

In the annexed drawings, Figure l is a front elevation of my improved circular sawing ma chine. Fig. 2 is a side elevation of the same; and Fig. 3 is an enlarged sectional View on line 0 as, Fig. 2.

Similar letters of reference indicate corresponding parts.

A represents the supporting-frame of the machine, said frame being usually formed of cast-iron, and consisting of standards which are firmly secured to each other at the base and at the top, and has secured to them the usual metallic horizontal top, to which the frame of the wooden table B is hinged, so as to allow the latter to be adjusted either toa horizontal or to an inclined position, as may be required by the nature of the work to be performed on the machine. A set-screw, 0, connected to the metallic top'of the frame and engaging the frame ofthe wooden table in the usual manner, serves to retain the said table in its adjusted position. I S denotes the circular saw, secured to its arbor a, as hereinafter described. Below the arbor, and parallel therewith, I place a counter-shaft, b, which I journal in bearings c a,

secured, respectively, to a hanger, H, suspended from the metallic top of the frame A, and to the standard of said frame between the aforesaid hanger and saw. The bearings c c are thus both at one side of the saw, and I am therefore enabled to terminate the countershaft 1) clear of the adjacent side of the saw, so as to avoid interference with the same. At the aforesaid side of the saw I affix to the arbora a pinion, D, and to the counter-shaft b, I attach a gear-wheel, d, which meshes in the pinion D, and directly under the gear-wheel d, I arrange the large driving gear-Wheel, F, which is secured to a shaft, 6, journaled in metallic boxes or bearings in the standards of the frame A, and is provided with two cranks, ff, with which treadles T are connected by pitmen P, in the usual manner. I do not, however, limit myself to theuse of two treadles, as in some cases a single treadle may be desired, and such modifications do notaffect my invention, as will hereinafter appear. The

' main object is to render the machine operative by foot-power as well as by hand-power, and to accomplish this by simple, effective, and convenient means.

Then the machine is operated by foot-power, the motion is transmitted to the saw-arbor by the driving-wheel F, intermediate gear, d, and pinion D. I

It will be observed that by the described arrangement of the intermediate coiinter shaft, b, said shaft is located near the top of the machine, and is thus in a convenient position to be operated by a hand-crank, L, which I detachably connect to the outer end of said shaft, so as to permit of removing it when the machine is to be operated by the treadles T.

In order to render the machine more effective in its operation, I attach to the countershaft a balance-wheel, h, preferably between the bearings c c.

The attachment of the saw S to its arbor a, I make as follows: The arbor a, I provide with a fixed or rigid collar, 12, against which one side of the saw abuts. The portion of the arbor which projects from the opposite side of securing the saw in its position. The screw- .of the metallic top of the frame A.

I11 order to render the blocks 15 t adjustable in their positions, so as to permit of taking up the wear between the ends of said blocks and pivots of the arbor a, I arrange the blocksi z movable longitudinally in the boxes f f, as

shown in Fig. 3 of the drawings. By means of set-screws s inserted radially through the boxes and engaging the blocks 73 the latterare retained in their adjusted position.

In practice I find that only one of the arborsupporting blocks i needs the before-described adjustable attachment to the box f, and the block i at the opposite end of the arbor may be arranged stationary in its position.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A combined foot and hand power sawingmachine comprising a supporting-frame, a saw-arbor journaled horizontally on the upper portion of said frame, a pinion on said arbor, a crankshaft below the saw-arbor and parallel therewith, treadles connected to the cranks of said shaft, a horizontal counter-shaft interposed between the erank-shaft and saw-arbor and projecting with one end beyond the side of the frame and adapted for the attachment of a hand-crank, and an intermediate pinion on the countershaft transmitting motion from the aforesaid driving-wheel to the pinion of the saw-arbor, all combined to operate substantially as set forth.

2. In combination with the saw-arbor, a pinion on said arbor, a counter-shaft parallel with the arbor, a pinion and a balance-wheel on the counter-shaft, said pinion meshing with the pinion of the saw-arbor, a crankshaft below the counter-shaft, a driving-wheel on said crank-shaft meshing with the pinion of the' counter-shaft, and treadles connected with the said crankshaft, all combined substantially in the manner specified and shown.

3. In combination with the circular saw, the arbor provided with screw-threads, and the combined pinion and clamping-nut consisting of a toothed wheel provided in the eye of its hub with screw-threads by which it is screwed. onto the arbor and caused to press against the side of the saw, substantially as described and shown.

In testimony whereofI have hereunto signed my name and affixed my seal, in the presence of two attesting witnesses, at Seneca Falls, in the county of Seneca, in the State of New York, this 25th day of September, 1886.

HENRY M. DARLING. [a s.]

\Vitnesses:

CLARENCE A. MAoDoxALn, .TAsPna N. Humour). 

